The penumbra is the area where light and dark meet. Penumbear is a stuffed teddy bear with a rather fetching scarf.

The wordplay of the title refers to the fact that the cute and cuddly hero of this deceptively fiendish iOS platformer is capable of walking on shafts of light, and controlling these illuminations is central to the gameplay.

On the surface, Penumbear is a fairly basic platformer. You have virtual buttons to control left and right movement, and a 'jump' button to execute leaps. Double-jumps are possible, and a swift double-tap in either direction will trigger a sprint.